Made with TPU, totally welded construction and a super strong closure to provide fully waterproof and dust proof performance. The PVC-free TPU material is strong, durable, flexible and resistant to UV and extreme cold - so it can be folded numerous times for pocket storage without cracking or discolouring. Designed with a detachable neck strap and corner anchor points for versatility. Totally welded construction?no stitches Super strong ziplock closure Anchor points on all corners for versatility Detachable neck strap Flexible and crease resistant UV resistant for superior long lasting clarity Freeze proof?will not crack in extreme cold Abrasion resistant, high strength, PVC free, TPU material